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Laboratory Measures of Filtration by Freshwater Mussels: An Activity to Introduce Biology Students to an Increasingly Threatened Group of Organisms
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Smith, Michael J.; Shaffer, Julie J.; Koupal, Keith D.; Hoback, W. Wyatt – Bioscene: Journal of College Biology Teaching, 2012
Many aquatic organisms survive by filter feeding from the surrounding water and capturing food particles. We developed a laboratory exercise that allows students to measure the effects of filtering by fresh water mussels on water turbidity. Mussels were acquired from Wards Scientific and exposed to a solution of baker's yeast. Over a period of one…
Descriptors: Biodiversity, Laboratories, Biology, College Students
Electrochemistry of the Zinc-Silver Oxide System. Part 2: Practical Measurements of Energy Conversion Using Commercial Miniature Cells.
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Smith, Michael J.; Vincent, Colin A. – Journal of Chemical Education, 1989
Summarizes the quantitative relationships pertaining to the operation of electrochemical cells. Energy conversion efficiency, cycle efficiency, battery power, and energy/power density of two types of zinc-silver oxide cells are discussed. (YP)
Descriptors: Chemical Reactions, Chemistry, College Science, Electric Batteries
Electrochemistry of the Zinc-Silver Oxide System. Part 1: Thermodynamic Studies Using Commercial Miniature Cells.
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Smith, Michael J.; Vincent, Colin A. – Journal of Chemical Education, 1989
Uses reversible electrochemical cells near equilibrium to study basic thermodynamic concepts such as maximum work and free energy. Selects sealed, miniature, commercial cells to obtain accurate measurement of enthalpy, entropy, and Gibbs free energy. (MVL)
Descriptors: Chemical Equilibrium, Chemical Reactions, Chemistry, College Science